Locomotive front end construction



Feb. 19, 1935. E. scHELLENs LOCOMOTIVE FRONT END CONSTRUCTION 3 Sheets-Sheet 1 Filed D60. 19. 1929 9;/ ATTORNEYS Feb- 19 1935 E. L. scHELLENs LOCOMOTIVE FRONT END CONSTRUCTION 5 Sheets-Sheet 2 Filed Dec?.v 19. 1929 Feb- 19," 1935. E. l.. scl-'iLl'Jais4 `[-:OCOMO'IIVE FRONT END CONSTRUCTION Filed Deo. 19, 1929 3 Sheets-Sheet 3 fr" MTORNEYS atented Fei). 191, 19335` n .Y ;i.1',9491,703"` Y l nQCoMoTivErRoNr END CONSTRUCTION A Eugne LJ "schemas, niagewoba, N. J., assigner f `#oC-S Engineering Company,`Englewood, N. J.;

a 'corporationzpffpelaware u Apiieauginemper :19,l 1,929, serial No. 415,199;

This invention relates tothe draftingof loco.-` motives, and more particularly to v, locomotive` front end constructiomand has three primary objects in view, to wit; the thorough removal .of i cinders vfrom the locomotive exhaustfgases, the." substantial increasing of.- draft efficiency, and theJ provision of a rugged, compact, and unined-struc L l 'i line 5-5,of Fig. A1; and,

ture to accomplish both o f saidendsf; More particularly, the inventioninvolves the separation of cindersj andfdustfromthe gases'v as the latterr pass'from theilues tothe stack, the

collection of the separatedV solids, thereturningk of them to the reboxlor ashpan, the elimination.

of` cinder netting, screensand other troublesome elements in the smokebox,ithe increasing o f `draft intensity-and eiliciencywhile at` the' samegtime keeping the-cinders awayfromthe poizflt'oririaxi-y mum vacuum, and in generaltheI provision of a inelevationgj n,

simple and rugged device which will accomplish the aforesaid purposes andatthe same time co-VjY operate withl the ordinary arrangement of smoke-1 box, nue sheet, superheater headerand` steam.

pipes.

Specically, the invention contemplates the provision, in a locomotive Asmollzebox, of anjnternal draft chamber Within the smokeboxand'sur# rounding thestack" and nozzle-tip, the` ,elongaftion and extensionfof the stackdownwardly toav point near the bottmnV of the,smokebox,means co-operating with the wall ofsaid chambertoprovide curved .passages therearoundj for. the;-r guidance of the gases and cin'ders from thesuperheaterfchamber behind thefstack vto the cinder- .1 collectingr chamber in front thereof', means .coi'V .operating with the aforesaidmeans toV divert the solids lforwardly away from the draft chamber and to `reverse the ow of gaseswrearwardly intoV said chamber` and 'up the stack, means for collect-,K ing said solidsV and means for continuouslyre-` turning them to a' part lof the rebox.

AThe invention further contemplates cer-tain Constr-notional features of advantage as will-here; v

f Figs. .2 and 3). n Y

Extending `forwardly and inwardly, from the inafterV appear. n i 1 How the foregoing, together,Withxsuchiother objects and advantages as'areincident to the invention orgwill'occur tojhose skilledin the vart,Vv

are obtained Vby my invention will appear from the. following description, taken together with,

bodying my invention, certain parts being shownv Figure 2731s `al-transi/erste section on the line 2-2 of Figfl;

(Figure 3 isra horizontal mid-section on `theA line 3 3 Vof Fig. 1;

` ,Figureliis asection, on theline 4--4 of Fig. l,

of"V one part of the `structure: onlyk; y

Figure d is a somewhat diagrammaticLbrokenaway, side elevational view of the locomotive structuregthre frontend of which is shown in Referring Arst to ligs. -1 Vand, it will be seen that Lhave illustrated alocomotive boiler 2 havinguafrcntlend vor smokebox 3,.smokebox coverw 4, rebox and ashpan 5, 6, stack outlet 7, exhausttip 4infront flue sheet19, fluesglr, superheater com-` partment 11dry-pipe12, superheateriheader 13,

sidetof.- the locomotive), onlysuch portions of these ordinary locomotive parts `being illustrated as are necessary to an ,understanding ofH the present invention.. n Y Y' 'Surrclnlnding the stackfla, Vwhich I have extendedn downwardly inside the smokebox much farther thanis the usual practice, so that its inlet end or throat '7b is near the exhaust-tip 8 and not far from the bottom'Ba of the smokebox shell, is alwall or partition V17 forming an V,inner draft or Vacuum chamberA lil-around the stack. This partition wallV 17 is, roughly, in the form of a vertical cylinder, Vextending from top Vto bottom ofk the smokebox, although it is preferably enlarged in.` diameter towardV the bottom, the relative shapesand cross-sectional areas of its upper andY lower ends 17a, 1711, beingillustrated in Figs. 14

and 5.UVV Irl-'its mid-portion it hasa verticallyelongated opening-lflc, at the front (seenbest in 19, substantially Y.verticallyfrdisposed which areA curved or ,of arcuate contour as at-19a to cooperate with the outer surfacegofV draft-chamber wall -1'1` to -form curved passageways 20 for thev products of combustion, these passages being defined at top andbottom by thetop closure wallsJ 19band the bottom oi-.the smolrebox,` respectively.

They.passy'agewaysV 20 are thus located laterally p at each side- ,ofthe1 central stackand draft chamber,A

Figure v5v is a ,section of the same part, on the' aol as seen in Figure 3. Forwardly and outside of the partitions 19, 19a, is a cinder and dust chamber or space 21 (seen in Figs. 1 and 3) beneath which is a collector or pocket 22 for such solids.

In the opening 1'7c through the front wall of partition 17, I preferably provide a vertical de- Y flector or guiding baille device 23, whichmay be flared outwardly and rearwardly at each'side, as at 23a, 23a,.such defiector being supported be tween the upper edge 24 and the lower edge 25 of said opening; and it should be observed that said lower edge 25 is preferably positioned above the inlet end 7b of the stack.

As will be seen in Figs. 1 and 2, the cinder hopper or collector 22 is preferably laterallyextended at the bottom, so that the rearwardly-extend- Y ing cinder disposal pipe 26 will clear .the saddle structure 27. Whenever the locomotive is running, there is a constant discharge of the cinders.

and dust from the collecting chamber through pipe 26 into the firebox,V adjacent the grate or ashpan (as shown in Fig. 6) by means of the jet device vshown in Figs.` l, 2, and '6. Said jet device may conveniently comprise a jet nozzle or tip 28, directed through the front wall of chamber 22 and extending in axial alinement with the pipe 26 (which preferably is so positioned as tol extend in a straight line to the iirebox); and asmall steam pipe 29 which may readily be connected, outside the smokebox, to the steam pipe 16, so that wheneverfrsteam is going to the cylinders there will be a continuous removal of cinders from the collector, by means of the steam jet.

In operation,'it willl now be seen that theexhaust from the-tip 8, passing out through the stack 7a, 7, creates a high vacuum in the inner chamber`18 which induces a heavy draft through the curved passages 20, 20 (said passages communicating with said chamber 18 through the fort--V ward opening 17o, and withV the flues -10 at the Y back by way of the superheater chamber 11).

Thecurved passages 20 are of considerable length from back to front and are so proportioned 'and of such contour that the products of combustion are drawn through them with great velocity. The

centrifugal force thus set up acts upon thesolids, which are carried in suspension in the gases, and causes them to followclosely the innersurface of the portions 19a of the guiding Vwalls 19 and to be ejected violently into the cinder chamber 21 whence they drop into the hopper 22.

At the same time, the gases and very light solids are caused by the draft to undergo a sudden change of direction in order to pass back into the inner chamber 18 and thence to the'stack. This the partitioning 19a by the vtime they leave the passages 20,-s`o that there isvery nearlyvperfect separation of the cinders from the gases. v

By my construction, I not only eliminate the ,necessity for the'usual netting, apron, table plate,

etc., which are troublesome and ineflicient, Vbut also take advantage of thisjby extending the stack downwardly,f(as hereinbefore briefly referred to) for, it should' be understood, inthe ordinary snfiokeboxl construction the table-plate islocated* Ymuch greater range for ments VAof stack length, stack diameter, nozzle Y characteristics, and spacing between nozzle-tip 1,991,703 v approximately at the level of the bottoni of my stack, or even higher, the nozzle-tip must ex-V tend abovethe table-plate, and the bottom of By myY the stack must be placed still higher. invention, on the other hand, the nozzle-tip 8 is preferably placed adjacent the bottom 3a of the smokebox, and the stack is extended downwardly so that its total"y length-is approximatelyV y4,0% greater thanithe length of theA ordinary stack for the same locomotive. I thereby obtain a proportioning the elleand stackv throat; and I have found that the proportions about' as I have'indicated them in the drawings, with stack length about more than usual, produce a much higher draft eflciency.

vA further substantial advantage is attained as follows: byextending the stack inlet 7b down to the point shownk (see Figs. l and 2) and by positioning the lower'edge' 25'f'of the opening .17e abovethe bottom of the stack, the path of travel of the cinders i's'eiiectively kept separate fromY Y the point of greatest draft intensity, i. e. the

throat of the` "stack, and the gases whichY pass through the'lower portions of passages 20 must inner, or draft chamber. Y

From the Vforegoing it is evidentfthat my invenpass upwardly and over the edge 25 to reach the tion attains'it's stated objects'in a simple and effective' manner; `thatfcindei's'lare separated, colv v lected and removed without the aid of any moving parts; that the intensity and efficiency ofV theA f f draft are increased, andthis without any tendency" to carry bif sparks through-the'st'alck; that inherently a much greater rangeffor proportioning.

the draft partsv isfpr'ovided; and tha-tall of these l,

ends are served by a unied andrugged ,structure which cannot get outof order, requires'practi' cally no maintenance, eliminates troublesome ment.

1. In a locomotive, 'a I tition meansfproviding an Yinnerdraft chamber -smokebox, a stack, par-4k 40; parts heretoforeused, and co''oper;ates with andv A tsneatly into the general smokebox arranger'` around said'stack, and guidingmeans outside of,`

said partition means curved aboutan axis -sub` stantially paralleling the stack axis to cooperateV with said jpartition means to form a curved pas tition and saidguidingtm'eans being apertured,v and the bottom of the'aperture through ther par-v tition being higher than 'the bottom oftheaperf ture through said guiding means. i 2. `Locomotive front end construction including inner draft chamber peripherally surrounding the stack and'havingfanopening in Ythe'front, gas passage means surrounding said-` chamber and having `an opening Yin the front, and means form-' Y sageway forthe products of combustion, said parf` Y 1 Va smokebox, draftv creating means, andastack extending into the smokeboxfa" shell forming an ing a cinder chamber in front of said openings., g

` 3. Locomotive front end construction including a smokebox, draft creating jet'means, and astack extending intothe smokehox in line with said jetl *o means, an inner draftchambersurrounding the stack and having an opening the front, gas

passage means surrounding, saidfch'ainber'l andi having an opening in the front,-` and a cinder4 chamber in front of said openings, said stack Aegt-f tending below the'iirst of saidopeningS.

4. Locomotive front end construction including i, Y'

asmokebox, dra-ft creating -jet'means adjacentLVV the bottom ofthe smokebox, anda stack extnd- '5 n' ing into the smokebox inline with said jet means, an Vinner draft chamber surrounding vthe stack andhaving an .opening inthe front, gas passage means surrounding said chamber and having an opening .in the front, and'a'cinder chamber in front of said'openings, said stackextending below the rst of said openings to a zone adjacent the bottom of the smolrebox.V A

5. In combination with a smokeboiga' stack, a shell forming-a draft chamber in the box periph-` erally around the stack and'having an opening in front of the stack, means forming an elongated curved passageway extending generallyv horizontally around said chamber and stack laterally thereof and opening at the front, and part of the. smokebox structure forming a cinderspace in front of the said means. v

6. In combination with a'smokebox, a stack, a draft chamber in the box and around the 'stack and having an opening inifrontv ofthe stack, means forming an elongated curved passagewar around said chamber and stack, openingy at the front, Vand smokebox structure forming a cinder space infront of the'said means, saidstack extending down belowsaidrst opening.

7. VIn alocomotive, Va smokebox, a stack, baille `:means forwardly of the stack includingrgenerally upright baffle walls having an opening there-vr through toward the front of the locomotive-to provide a cinder collecting chamber disposed forwardly of such upright wallsfadditional'baifle means including generally Yupright walls positioned to define an upright draft chamber generally' axially of said stack, the upright walls of l g said additionalbaille` means being apertured toward the ,front thereof, andthe tworbafllemeans being arranged to provide a gaspassage therebetween, wherebythe products of combustion are directed forwardly through said passage, thence rearwardly intosaid draft chamber' and finally upwardly for discharge from the stack and whereby cindersy are projected forwardly into the cinder Vchamber out 'ofithe'path of travel of the gases in the zoneat whichvthe gases lenter said draft chamber.

8. In a locomotive, a smokebox, a stack having its lower end portion extended into the smokebox, partition means positioned circumferentially about said portion of the stack to provide an inner draft chamber around said portion, and guiding means outside of said partition means curved about an axis substantially paralleling the stack axis to eifect a circuitous flow of the gases Vto said inner chamber and apertured to `eiect centrifugal discharge of cinders and the like from the gas stream. i

, 9. In a locomotive, a smokebox, a stack having its lower end portion extended into the smokebox, partition means positioned circumferentially about said portion of the stack to provide an inner chamber around said portion, guiding means outside of said partition means curved onan axis substantially paralleling the stack axisto effect a circuitous flow of the gases to said inner chamber and apertured to effect centrifugal discharge of cinders and the like from the gas stream, and a cinder receiving chamber in position to receive the discharged cinders, said guiding means coreceiving chamber.

lo. In a locomotive having a smokebox space and an upright exhaustor outlet stack associated therewith, a drafting and cinder handling assembly comprising/'anupstanding approximately cylindrical shell or vertically extending housing longation of sai'd'staclr `extending an appreciable,

distancelintosaid .chamber and in communication therewith, a draft .forcingdevice extending upwardly intothebottom of the chamber and in Y communication.` therewith and .having an outlet in substantial alinement with the stack extension,

saidshell being Vsubstantially closed atA theA top and bottom except for said communicationsY and having Y'a vertically elongated apertured a'rea'orA openingrin the front portion thereof, andl means forming for the products of combustion a passageway adjacent the lowerportion of said shell extending from behind the shellto the front thereof, whereby the stream or flow of the com- K bust-ion gases abruptly reverses itsvdirection and then back through the opening` into the :interior of the shell. v Y

1l. In a locomotive having a smokebox space and an upright exhaust/or outlet stack associated therewith, a drafting-andlcinder handling assembly comprising an .upstanding approximatelyiV cylindrical shell for vertically extendinghousing of lessdiameter thanfthe maximum transverse width of the smokebox space, a`V downward pro-- lcngationofv said stack extending an appreciabley distance into said chamber andl'in communicationV therewith, a draft forcing device extending uparea or opening inthe front portion thereof, and

means forming for the products'of combustion a passageway' extending from behind the shellfto thefront thereof, whereby the stream or flow ofl the combustion gases abruptly 1 reverses its direction by passing forwardly through said passageway and then back through the opening into ,the interior'of-the shell, vand vertical deilector:

plate means associated with said opening.

12. In a locomotive having a smokebox space and an upright exhaust or outlet stack associated therewith, a drafting', and cinder handling assembly comprising an upstanding approximately eylindrical shell or vertically extending housing structure in the. smokebox forming a chamber of'less diameter than the maximum transverse width of the smokebox space, a downward prolongation of said stack extending an appreciable Vdistance into said chamber and in communication therewith, a draft forcing device extending upwardly into the bottom of the chamber and in communication therewith and having an outlet in substantial alinement with the stack extension, said shell beingV substantially closed at the top and bottom except for said communications and having a vertically elongated apertured area or opening in the front portion thereof, and means forming for the products of combustion a passageway extending from behind the shell to the front thereof, Vwhereby the stream or now 'off the combustion gases abruptly reverses its operating with the smokebox itself to form said direction by passing forwardly through said passageway and then backthrough the opening into the interior of the shell, and vertically extending transversely-curved deiiector plate means associated with said opening.

13. In a locomotive having a smokebox space and an upright exhaust or outlet stack associated structure inthe smokebo'x Vforming a chamber of structure in thetv'smokebox` forming a chamber therewith, a draftingland cinder handling assembly-comprising an upstanding approximately cy-v lindrical shell or vertically extending housing4 structure in the smokebox forming a chamber of less diameter than the maximum transverse Width ofthe smokebox space, a downwardoprolongation of said stack extending an appreciable distance into said chamber and in communication therewith, a draft forcing device extending-up-A wardly into the,Y bottom of the chamber and in connnum'cationftherewith and having an outlet in substantial alinement with the stack extension,

said shellihaving an opening formed in a partof its peripheral wall for ingress of the exhaust gas stream and means forming a peripherally enclosed well or pocket adjacent the bottom of the chamber in surrounding relation to the outlet of Vthe Vdraft forcing device'and subjacent to the bottom ofthe stackextension. Y

14. In a locomotive having a smokebox space and an upright exhaust or outlet stack associated therewith, a drafting and cinder handling assembly, comprising any upstanding approximately cylindrical shell or vertically extending housing structure `Vin `the smokebox forming a chamber of'less diameter thanl the maximum Ytransverse Widthpf the smokebox4 space, .a downward prolongation o said stack extending lan appreciable distance into said chamberand in communicav tion therewith, a-draft forcing device extending upwardly into the bottom of the chamber and in communication therewith landhaving an outletr in substantial alinement with Athe stack extension, said shell having an opening formed in a part-'of its peripheral wall for ingress of the exhaust gaS'stream, means vforming a peripherally enclosed'well or pocket adjacent the bottom of the chamber in surrounding relation tothe outlet of the draft forcing device and subjacent `to the bottom of the stack extension, and means associated with said shell for tangentially diverting. solids such as heavy cinders from thev immediate v zone of thedraft. Y t v 15. `In a locomotive having a smokebox space and an upright exhaust or outlet stack associated therewith, a drafting and cinder handling assembly `comprising an upstanding approximately 'c`y` lindrical shell or vertically, extending 'housing structure in thesmokebox formingachamberof ofthe smokebox space, a downward prolongation of said stack extending, an appreciable' distance into saidchamber and'in communication therewith, a draft forcing device extending upwardly intothe bottom of the chamber and in communiv cationztherewith andl havinglan outlet. inl sub-` stantial alinement with the stack extension; said shell having an :opening formed'in a part of its peripheral wall for vingress of the exhaust gas stream, means forming a peripherally enclosed well or pocket adjacent the bottom of the chamber in surrounding relation. to the outlet of the draft forcing device and subjacentV to the bottom of the, stack extensionA and upstandingV plate f means associated withfsaid opening.

16. vIn a locomotive having. a smokebox spacev less diameter than `the maximum transverse width,`

and an uprightcxhaust ,or outlet stack associated*` therewith;a drafting andecinder handling assembly comprising an upstanding approximately cylindrical shell orv vertically extending housingstructure in the'srnokebox forming a chamber of less diameter than themaximum transverse WidthY of the smokebox space, a'downward'prolongation-4 of said stack kextending an appreciable distance into said chamber and in communication*'there-v with, a: draftV forcingY device Aextending'upwardly into the bottom of the chamber and in communi-' cation therewith and having an outlet in substantial alinement with the stack extensiomsaid shell' having'an opening formed in apart of its peripheral wall for ingress of the exhaust gas stream, meansk forming a rperipherallyl enclosed well or pocket adjacent the bottom vofthechamber inl CERTIFICATE OF CORRECTION.

Patent No. 1,991,703. February 19, 1935.

EUGENE L. SCHELLENS.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, second column, line 18, claim 10, after "direction" insert the words by passing forwardly through said passage way; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 12th day of March, A. D. 1935.

Leslie Frazer (Seal) Acting Commissioner of Patents. 

